Mixer for dry and wet ingredients



Nov.'8, 1949 H. G. EASTMAN 2,487,533

MIXER FOR DRY AND WET INGREDIENTS Filed Feb. 25, 1946 2 Sheets-Sheet l 0 H G. EASTMAN INVENTOR.

Nov. 8, 1949 H. G. EASTMAN MIXER FOR DRY AND WET INGREDIENTS 2 Sheets-Sheet 2 Filed Feb. 25, 1946 H G. EASTMAN Patented Nov. 8, 1949 UNITED STATES MIXER FORDRY AND WET INGREDIENTS Harold lG. iEastman, Arlington, Tex., assignor of lone-dialf to Roland Turck, Arlington, and one- .half to Stewart W. De Vore, Tarrant County,

Tex.

Application February25, 1946, Serial No. 650,081

.3 Claims. 1

I his invention relates :to mixing machines and has particular reference to a :machine for mixin a-mixer :of the described :class, apparatus :and

construction whereby the interior parts of the machine will not become .clogged even though wet ingredients of high viscosity are .used.

A further-object of the invention is-to provide a mixing machine capable of mixingtlarge quantities of wet and dry ingredients with relatively low horsepower.

A further object of the invention is to provide a mixing machine of the described class wherein the mass within the mixingchamber is thorouglily acted upon.

A still further object of the invention is :to provide a mixing machine for wet and dry ingredients which is capable of .readily unloading the mixed-mass.

These and other objects will become'apparent from the following description of the accompanyin-gdrawingawherein:

Figure 1 is a side elevational view, shown .in broken section, of the new :mixing machine.

Figure 2 is abroken le'ft end elevational 'view of the mixing-machine shown in Figure ':l.

Figure 3 is a broken elevational 'view of the right end of the mixing machine shown in Figure 1.

*Figure 4 is a vertical sectional view, Wlth1081- tain parts in elevation-of the regulator of vthe'new mixing machine.

Figure '5 is a broken side -elevational view of a helical conveyor used in the conveyor assembly of the new mixing machine, and,

Figure 6 is a perspective view of a portion of the mixing chamber shaft and showing the arrangement of blades and knives thereon.

Accordingly, the invention includes a base I and a frame work 2 mounted thereon. ..A nylindrical mixing'chamber 3 is .mounted .at the upper end of the frame 2 and has a mixing chamber shaft 4 journaled therethrough, said shaft being mounted in bearings at each end of the said chamber. As shown in Figures 1, 2 and .3, :the mixing shaft 4 is positioned for rotation within the axial center of the cylindrical mixing chamher 3. The shaft 4 is driven byany suitable arrangement such as a pulley 45 mounted :on :the said shaft outside of the chamber 3, and driven by a motor 1 connected by belts 8.

Above .the chamber 3 and parallel therewith, there is a conveyer H3 mounted for rotation housing 9. The conveyer shaft H extends beyond the closed ends of the housing 9 wherepulleys, 1-2 and I3, respectively, aremounted. The first referred to pulley 42 :iszdriven by .another pulley .14 mounted on the mixing chamber shaft 4 outside of the chamber 3, and is operatively connected therewithbymeans-ofabelt I 5. The last referred toarrangement :of pulleys and-beltis for-rotating and. operating the helical-conveyer M.

The 1pulley 13 at the other end of the conveyer shaft H is connected by means of a belt .16 to a fluid pump H. The latter (11') is connected with pipes I3, one :line of which extends 'to a nozzle l9 positioned withinthe upper endofthe chamber 3 and near the discharge end of the conveyer H]. An opening 20 is provided between the discharge end of zthe conveyer housing 9,-and the inlet end of the mixingchamber 3.

As particularly shown in Figure 3, the lines 18 are provided with a T 2| for returning :excess wet ingredients to storage. Before reaching the nozzle l9 the wet ingredients pass through a valve mechanism 22 which isoperated and controlled by the regulator assembly 23 illustrated in Figure .4.

Dry ingredients are received, by gravity, through'an inlet spout mounted-above the inlet 25 of the conveyerhousing 9. Before reaching the inlet 25 the spout 2A is branched, as at 26 in FigureB, in order to bypass the mixing machine when desired. The branch 2b is provided with a deflector plate 2*! which is operated by an :external lever 28. The sacker 23 is branched as at 30, 'thus allowing one sack (not shown) to be positioned for receiving "mixed material while another sack is being attached. Direction of flow at the sacker 29 is controlled by another deflector plate 3| similarly operated by an external lever 32. The bypass portion of the 'inlet spout 24 connecting with the sack 2-9 is indicated by the numeral 33.

Referring now to Figure 21 and the interior of the mixing-chamber 3', the shaft 4 is provided with .a series of spaced angularly and radially ing chamber 3 with the bypass chute 33. .Rreferably, the unloading chute 36 is connected with .the upper portion of the mixing chamber and tangentially therewith. Unloading paddles 31 are mounted on the mixing chamber shaft 4 at the discharge end of the chamber 3 for lifting the mixed mass into the discharge chute 36 from where it enters the sacker 29. As shown in Figure 1, the faces of the paddles 31 are parallel with the length of the shaft 4.

Referring now to Figures 2 and 4, and particularly to the regulator 23, the latter is comprised of a housing 38 of sheet metal or the like,

and has horizontally pivoted regulating gates 39 mounted therein, which gates are inwardly and downwardly disposed, and when closed are in contact with each other along their lower edges. Within the housing 38 there are inwardly and opposingly arranged baffles 40 which are downwardly inclined so as to protect parallel shafts 4-! therebeneath on which the gates 39 are mounted. outwardly of the housing 38 and secured to the gate shafts 4!, bell cranks 42 are mounted for operating the gates 39. ticularly shown in Figure 4, the leg of one bell crank 44 is upwardly disposed, whereas the corresponding leg of the other bell crank 4| is downwardly disposed. The referred to legs are pivotally connected by means of a link 43, and by this arrangement the gates 39 are mechanically connected so as to cause each to have equal, but oppos'te, angu ar movement when in opera.- tion. The outwardly extending leg of one of the bell cranks 4| is provid d with a counterweight 44, whereas the corresponding eg of the other bell cran" M is provided with a linking arm 45 which in turn is connected with the previously referred to l quid supply valv 22.

In operation, dry ingredients a e supplied by gravity, through the chute 24, and through the regulator 23. The n redients are then propelled by the conreye: Ill to the mixing cham-- ber 3.

The amount of dry ingredients "assin through the regulator 23 opens the gates 39 accordingly, and by reason of the described construct on, the wet ingredient valve 22 is opened to allow the wet ingredients to enter the mixing chamber through the nozz e l9. By this arrangement a control ed percentage of dry ingredients to wet ingredients is provided. By changing the leverage of the regulator 23, or the control of the valve 22, the proportion of wet to dry ingredients may be changed.

The helical conveyer l0 forces the dry ingredient to the mixing chamber 3 through the opening 20 therebetween and whereafter the nozzle l9 sprays the wet ingredients upon the dry. By reason of the angular disposition of the blades 34 the wet mass is moved toward the discharge chute 36 of the chamber 3. Preferably the blades 34 are so spaced that the mass between blades is acted upon at its center by the operation of each successive blade. Where the wet ingredient has a high viscosity, a tendency of the mixed and partially mixed mass is to adhere to the walls of the chamber 3. By reason of the action of the described knife blades 35 such adhered masses are removed from the wall of the chamber 3 without clogging or balling up before each blade 34 since the said knives are disposed from the training edge rather than the leading edge of the said blades. When the mass acted upon reaches the lifting paddles, the mixed mass is then raised by the same into the unloading chute 36, from where it moves by gravity to the sacker 30.

As partion, a horizontal mixing chamber, a driven impeller within the said chamber, a housing above the said chamber, a driven conveyor within the said housing, an opening between the said housing and the said chamber near one end of the latter, an inlet in the upper surface of the said housing opposite the said chamber opening, a vertical chute above and opening into the said housing inlet, a gate pivotally supported within the said vertical chute, a nozzle within the said chamber and near the said chamber opening, a pipe connected with the said nozzle, a valve connected with the said pipe for regulating the said nozzle, a bell crank secured to the said gate, a linking arm connecting the said bell crank with the said valve, and an outlet in the said chamber remote from the said chamber opening.

2. A mixing machine comprising in combination: a horizontal mixing chamber, a housing above the said chamber, a driven conveyor within the said housing, an opening between the said housing and the said chamber near one end of the latter, an inlet in the upper surface of the said housing opposite the said chamber opening, a vertical chute above and opening into the said housing inlet, a pivotally supported gate within the said vertical chute, a nozzle within the said chamber near the said chamber opening, a pipe connected with the said nozzle, a valve connected with the said pipe for regulating the said nozzle, an outlet in the said chamber remote from the said chamber opening, a bell crank secured to the said gate, a linking arm connecting the said bell crank with the said valve, and lifting paddles carried by the said impeller and located opposite the said chamber outlet.

3. A mixing machine comprising in combination: a horizontal mixing chamber, a driven impeller within the said chamber, a housing above the said chamber, a driven conveyor within the said housing, an opening between the said housin; and the said chamber near one end of the :7 latter, an inlet in the upper surface of the said housing opposite the said chamber opening, a vertical chute above and opening into the said housing inlet, a gate pivotally supported within the said vertical chute, a nozzle within the said chamber and near the said chamber opening, a pipe connected with the said nozzle, a valve connected with the said pipe for regulating the said nozzle, a bell crank secured to the said gate, a linking arm connecting the said bell crank with the said valve, an outlet in the said chamber remote from the said chamber opening, a bypass in the said chute above the said gate, and an outlet chute connecting the said outlet with the said bypass.

HAROLD G. EASTMAN.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 299,370 Fletcher May 27, 1884 881,135 Kirk Mar. 10, 1908 1,852,712 Field Apr. 5, 1932 1,866,030 Green July 5, 1932 2,164,257 Riza June 27,1939 2,237,787 Marshall Apr. 8, 1941 

